#! /usr/bin/env dash

# shellcheck source=/dev/null
SHELL_LIBRARY_VERSION="1.1.3" . %SHELL_LIBRARY_PATH

# Main loop
while true; do
  # vars
  used_space=$(btrfs filesystem usage /srv 2> /dev/null | awk '{if ( /Used:/ ) { print $2 } } ' | head -n1)
  all_space=$(btrfs filesystem usage /srv 2> /dev/null | awk '{if ( /Device size:/ ) { print $3 } } ' | head -n1 | tr -d "GiB")


  # Check space available (4) and percentage used (5)
  spaceperc=$(echo "$(echo "$used_space" | tr -d "GiB" )"  "$all_space"  | awk '{div=$1/$2;div *= 100; printf"%2d%%\n",div }')

  echo "diskspace|string|$used_space"
  echo "diskperc|string|$spaceperc"
  echo ""
  sleep 1
done

# vim: ft=sh